diff options
Diffstat (limited to 'source/blender/render/intern/raytrace/rayobject.cpp')
| -rw-r--r-- | source/blender/render/intern/raytrace/rayobject.cpp | 149 |
1 files changed, 31 insertions, 118 deletions
diff --git a/source/blender/render/intern/raytrace/rayobject.cpp b/source/blender/render/intern/raytrace/rayobject.cpp index de6b9139363..f511042749e 100644 --- a/source/blender/render/intern/raytrace/rayobject.cpp +++ b/source/blender/render/intern/raytrace/rayobject.cpp @@ -138,80 +138,29 @@ MALWAYS_INLINE int vlr_check_bake(Isect *is, ObjectInstanceRen *obi, VlakRen *UN /* Ray Triangle/Quad Intersection */ -MALWAYS_INLINE int isec_tri_quad(float start[3], float dir[3], RayFace *face, float uv[2], float *lambda) +MALWAYS_INLINE int isec_tri_quad(float start[3], const struct IsectRayPrecalc *isect_precalc, RayFace *face, float r_uv[2], float *lambda) { - float co1[3], co2[3], co3[3], co4[3]; - float t0[3], t1[3], x[3], r[3], m[3], u, v, divdet, det1, l; - int quad; - - quad = RE_rayface_isQuad(face); - - copy_v3_v3(co1, face->v1); - copy_v3_v3(co2, face->v2); - copy_v3_v3(co3, face->v3); - - copy_v3_v3(r, dir); - - /* intersect triangle */ - sub_v3_v3v3(t0, co3, co2); - sub_v3_v3v3(t1, co3, co1); - - cross_v3_v3v3(x, r, t1); - divdet = dot_v3v3(t0, x); - - sub_v3_v3v3(m, start, co3); - det1 = dot_v3v3(m, x); - - if (divdet != 0.0f) { - divdet = 1.0f / divdet; - v = det1 * divdet; - - if (v < RE_RAYTRACE_EPSILON && v > -(1.0f + RE_RAYTRACE_EPSILON)) { - float cros[3]; - - cross_v3_v3v3(cros, m, t0); - u = divdet * dot_v3v3(cros, r); - - if (u < RE_RAYTRACE_EPSILON && (v + u) > -(1.0f + RE_RAYTRACE_EPSILON)) { - l = divdet * dot_v3v3(cros, t1); - - /* check if intersection is within ray length */ - if (l > -RE_RAYTRACE_EPSILON && l < *lambda) { - uv[0] = u; - uv[1] = v; - *lambda = l; - return 1; - } - } + float uv[2], l; + + if (isect_ray_tri_watertight_v3(start, isect_precalc, face->v1, face->v2, face->v3, &l, uv)) { + /* check if intersection is within ray length */ + if (l > -RE_RAYTRACE_EPSILON && l < *lambda) { + r_uv[0] = uv[0]; + r_uv[1] = uv[1]; + *lambda = l; + return 1; } } /* intersect second triangle in quad */ - if (quad) { - copy_v3_v3(co4, face->v4); - sub_v3_v3v3(t0, co3, co4); - divdet = dot_v3v3(t0, x); - - if (divdet != 0.0f) { - divdet = 1.0f / divdet; - v = det1 * divdet; - - if (v < RE_RAYTRACE_EPSILON && v > -(1.0f + RE_RAYTRACE_EPSILON)) { - float cros[3]; - - cross_v3_v3v3(cros, m, t0); - u = divdet * dot_v3v3(cros, r); - - if (u < RE_RAYTRACE_EPSILON && (v + u) > -(1.0f + RE_RAYTRACE_EPSILON)) { - l = divdet * dot_v3v3(cros, t1); - - if (l > -RE_RAYTRACE_EPSILON && l < *lambda) { - uv[0] = u; - uv[1] = -(1.0f + v + u); - *lambda = l; - return 2; - } - } + if (RE_rayface_isQuad(face)) { + if (isect_ray_tri_watertight_v3(start, isect_precalc, face->v1, face->v3, face->v4, &l, uv)) { + /* check if intersection is within ray length */ + if (l > -RE_RAYTRACE_EPSILON && l < *lambda) { + r_uv[0] = uv[0]; + r_uv[1] = uv[1]; + *lambda = l; + return 2; } } } @@ -223,62 +172,23 @@ MALWAYS_INLINE int isec_tri_quad(float start[3], float dir[3], RayFace *face, fl MALWAYS_INLINE int isec_tri_quad_neighbour(float start[3], float dir[3], RayFace *face) { - float co1[3], co2[3], co3[3], co4[3]; - float t0[3], t1[3], x[3], r[3], m[3], u, v, divdet, det1; - int quad; - - quad = RE_rayface_isQuad(face); + float r[3]; + struct IsectRayPrecalc isect_precalc; + float uv[2], l; - copy_v3_v3(co1, face->v1); - copy_v3_v3(co2, face->v2); - copy_v3_v3(co3, face->v3); negate_v3_v3(r, dir); /* note, different than above function */ - /* intersect triangle */ - sub_v3_v3v3(t0, co3, co2); - sub_v3_v3v3(t1, co3, co1); - - cross_v3_v3v3(x, r, t1); - divdet = dot_v3v3(t0, x); - - sub_v3_v3v3(m, start, co3); - det1 = dot_v3v3(m, x); - - if (divdet != 0.0f) { - divdet = 1.0f / divdet; - v = det1 * divdet; - - if (v < RE_RAYTRACE_EPSILON && v > -(1.0f + RE_RAYTRACE_EPSILON)) { - float cros[3]; - - cross_v3_v3v3(cros, m, t0); - u = divdet * dot_v3v3(cros, r); + isect_ray_tri_watertight_v3_precalc(&isect_precalc, r); - if (u < RE_RAYTRACE_EPSILON && (v + u) > -(1.0f + RE_RAYTRACE_EPSILON)) - return 1; - } + if (isect_ray_tri_watertight_v3(start, &isect_precalc, face->v1, face->v2, face->v3, &l, uv)) { + return 1; } /* intersect second triangle in quad */ - if (quad) { - copy_v3_v3(co4, face->v4); - sub_v3_v3v3(t0, co3, co4); - divdet = dot_v3v3(t0, x); - - if (divdet != 0.0f) { - divdet = 1.0f / divdet; - v = det1 * divdet; - - if (v < RE_RAYTRACE_EPSILON && v > -(1.0f + RE_RAYTRACE_EPSILON)) { - float cros[3]; - - cross_v3_v3v3(cros, m, t0); - u = divdet * dot_v3v3(cros, r); - - if (u < RE_RAYTRACE_EPSILON && (v + u) > -(1.0f + RE_RAYTRACE_EPSILON)) - return 2; - } + if (RE_rayface_isQuad(face)) { + if (isect_ray_tri_watertight_v3(start, &isect_precalc, face->v1, face->v3, face->v4, &l, uv)) { + return 2; } } @@ -317,7 +227,7 @@ MALWAYS_INLINE int intersect_rayface(RayObject *hit_obj, RayFace *face, Isect *i RE_RC_COUNT(is->raycounter->faces.test); dist = is->dist; - ok = isec_tri_quad(is->start, is->dir, face, uv, &dist); + ok = isec_tri_quad(is->start, &is->isect_precalc, face, uv, &dist); if (ok) { @@ -389,6 +299,9 @@ int RE_rayobject_raycast(RayObject *r, Isect *isec) { int i; + /* Pre-calculate orientation for watertight intersection checks. */ + isect_ray_tri_watertight_v3_precalc(&isec->isect_precalc, isec->dir); + RE_RC_COUNT(isec->raycounter->raycast.test); /* setup vars used on raycast */ |